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The elevator shown in fig. is descending...

The elevator shown in fig. is descending with an acceleration of 2 `m//s^(2)`. The mass of block A is 0.5 kg. The force exerted by the block A on the block B is

A

2N

B

4N

C

6N

D

8N

Text Solution

Verified by Experts

The correct Answer is:
B
`R=m(g-a)`
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Knowledge Check

  • The elevator shown in figure is descending, with an acceleration of 2 m//s^(2) . The mass of block A is 0.5 kg. the force exerted by block A on block B is (mass of block B is 1 kg)

    A
    2N
    B
    8N
    C
    6N
    D
    4N

  • A block is kept on the floor of an elevator. The elevator starts descending with an acceleration of 12 m//s^(2) the displacement of the block during 1^(st) one second wth respect to elevator is-

    A
    1m downwards
    B
    1 m upwards
    C
    5m downwards
    D
    zero meter.

  • A block of mass ( sqrt( 3))/( 10) kg is placed on a rough horizontal surface as shown in the figure. A force of 1N is applied at on end of the block and the block remains stationary . The normal force exerted by the surface on the block acts ( g = 10 m//s^(2) )

    A
    through the center of mass of the block
    B
    through point A.
    C
    through point B.
    D
    through the point at a distance 5cm. From A
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